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- Centre National de la Recherche ScientifiqueFR872 papers
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80 papers · 1 filter
Onsets of avalanches in the BTW model
Ajanta Bhowal
The onsets of toppling and dissipation in the BTW model are studied by computer simulation. The distributions of these two onset times and their dependences on the system size are…
Log-periodic Oscillations for Biased Diffusion in 3D Random Lattices
Dietrich Stauffer, Didier Sornette
Random walks with a fixed bias direction on randomly diluted cubic lattices far above the percolation threshold exhibit log-periodic oscillations in the effective exponent versus t…
Alternative Gravitational Theories in Four Dimensions
Friedrich W. Hehl
We argue that from the point of view of gauge theory and of an appropriate interpretation of the interferometer experiments with matter waves in a gravitational field, the Einstein…
Dynamic Melting and Decoupling of the Vortex Lattice in Layered Superconductors
Stefan Scheidl, Valerii M. Vinokur
The dynamic phase diagram of vortex lattices driven in disorder is calculated in two and three dimensions. A modified Lindemann criterion for the fluctuations of the distance of ne…
Two-lane traffic rules for cellular automata: A systematic approach
Kai Nagel, Dietrich E Wolf, Peter Wagner +1
Microscopic modeling of multi-lane traffic is usually done by applying heuristic lane changing rules, and often with unsatisfying results. Recently, a cellular automaton model for…
Volume elements of spacetime and a quartet of scalar fields
Frank Gronwald, Uwe Muench, Alfredo Macías +1
Starting with a `bare' 4-dimensional differential manifold as a model of spacetime, we discuss the options one has for defining a volume element which can be used for physical theo…